Manual calculating device



FIG. 1 is a perspective view of a manual calculating device, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top elevation view thereof, the bottom elevation view being a mirror image thereof; and,

FIG. 5 is a right side elevation view thereof, the left side elevation view being a mirror image thereof.

The broken lines are directed to environment and form no part of the claimed design.

The stippled shading is meant to indicate a contrast in appearance between the remainder of the manual calculating device. 

CLAIM The ornamental design for a manual calculating device, as shown and described. 